Figure 11. Oral and nasal behaviors (O/N or rooting with the snout) and oral, nasal, and rubbing behavior (O/N + R) for indoor- vs outdoor-reared pigs. SE=1.16; P=0.005.

Figure 11. Oral and nasal behaviors (O/N or rooting with the snout) and oral, nasal, and rubbing behavior (O/N + R) for indoor- vs outdoor-reared pigs. SE=1.16; P=0.005
Morrow-Tesch, Julie. "Environmental Enrichment for Dairy Calves and Pigs," Animal Welfare Information Center Newsletter, 7(3):3-8, Winter 1996/1997.